标题： 体流体动力学输运在外尔半金属中 显示英文标题

标题： Bulk Hydrodynamic Transport in Weyl Semimetals

摘要： 集体纵向模态，等离子体，在外尔半金属中整体流体动力学输运中的作用被探讨。 与石墨烯不同，其中这些模态是无间隙的，外尔半金属中的等离子体是有间隙的。 然而，通过降低温度或化学势，这个间隙可以变得任意小，使得等离子体模态在热力学和输运中都可以被热地访问。 在接近电荷中性且非常纯净的外尔半金属中，当等离子体间隙最小时，我们发现它们在热导率和粘度中留下了痕迹。 显示英文摘要

摘要： The role of collective longitudinal modes, plasmons, in bulk hydrodynamic transport in Weyl semimetals is explored. In contrast to graphene, where these modes are gapless, plasmons in Weyl semimetals are gapped. This gap, however, can be made arbitrarily small by decreasing the temperature or the chemical potential, making plasmon modes thermally accessible, both in thermodynamics and transport. In very clean Weyl semimetals near charge-neutrality where the plasmon gap is minimal, we find that they leave an imprint in the thermal conductivity and the viscosity.